Useless add-on, all it does it promote it's "premium" option. On the first day of attaching it I was hit 10 times in the browser and received four emails about upgrading to the premium membership- whilst not receiving anything at it's basic level. As far as the add-on goes, there are much more open sourced, clear and honest add-ons that offer far more protection and cover that can be selected. I've now directed all mail from them direct to spam/ auto delete (as request to remove my profile has been accepted but ignored!)